//
   //  ========================================================================
   //  Copyright (c) 1995-2013 Mort Bay Consulting Pty. Ltd.
   //  ------------------------------------------------------------------------
   //  All rights reserved. This program and the accompanying materials
   //  are made available under the terms of the Eclipse Public License v1.0
   //  and Apache License v2.0 which accompanies this distribution.
   //
   //      The Eclipse Public License is available at
  //      http://www.eclipse.org/legal/epl-v10.html
  //
  //      The Apache License v2.0 is available at
  //      http://www.opensource.org/licenses/apache2.0.php
  //
  //  You may elect to redistribute this code under either of these licenses.
  //  ========================================================================
  //
  
  package org.eclipse.jetty.websocket.common.extensions.identity;
  
  import org.eclipse.jetty.util.QuotedStringTokenizer;
  import org.eclipse.jetty.util.annotation.ManagedObject;
  import org.eclipse.jetty.websocket.api.WebSocketException;
  import org.eclipse.jetty.websocket.api.WriteCallback;
  import org.eclipse.jetty.websocket.api.extensions.ExtensionConfig;
  import org.eclipse.jetty.websocket.api.extensions.Frame;
  import org.eclipse.jetty.websocket.common.extensions.AbstractExtension;
  
  @ManagedObject("Identity Extension")
  public class IdentityExtension extends AbstractExtension
  {
      private String id;
  
      public String getParam(String key)
      {
          return getConfig().getParameter(key,"?");
      }
  
      @Override
      public void incomingError(WebSocketException e)
      {
          // pass through
          nextIncomingError(e);
      }
  
      @Override
      public void incomingFrame(Frame frame)
      {
          // pass through
          nextIncomingFrame(frame);
      }
  
      @Override
      public void outgoingFrame(Frame frame, WriteCallback callback)
      {
          // pass through
          nextOutgoingFrame(frame,callback);
      }
  
      @Override
      public void setConfig(ExtensionConfig config)
      {
          super.setConfig(config);
          StringBuilder s = new StringBuilder();
          s.append(config.getName());
          s.append("@").append(Integer.toHexString(hashCode()));
          s.append("[");
          boolean delim = false;
          for (String param : config.getParameterKeys())
          {
              if (delim)
              {
                  s.append(';');
              }
              s.append(param).append('=').append(QuotedStringTokenizer.quoteIfNeeded(config.getParameter(param,""),";="));
              delim = true;
          }
          s.append("]");
          id = s.toString();
      }
  
      @Override
      public String toString()
      {
          return id;
      }
  }